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| author | Julian Sax <jsbc@gmx.de> | 2018-10-05 21:48:31 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-11-25 11:53:37 +0300 |
| commit | a896200ebdffa925f7b4dc4ae7f9fe0e0f920790 (patch) | |
| tree | a201e09735b4c5d31648be6f13c8e252f2dfbdeb | |
| parent | e031f0a8da1cdb358d63c2081c17e149fa898f94 (diff) | |
| download | linux-a896200ebdffa925f7b4dc4ae7f9fe0e0f920790.tar.xz | |
Input: silead - try firmware reload after unsuccessful resume
[ Upstream commit dde27443211062e841806feaf690674b7c3a599f ]
A certain silead controller (Chip ID: 0x56810000) loses its firmware
after suspend, causing the resume to fail. This patch tries to load
the firmware, should a resume error occur and retries the resuming.
Signed-off-by: Julian Sax <jsbc@gmx.de>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/input/touchscreen/silead.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/silead.c b/drivers/input/touchscreen/silead.c index f502c8488be8..867772878c0c 100644 --- a/drivers/input/touchscreen/silead.c +++ b/drivers/input/touchscreen/silead.c @@ -504,20 +504,33 @@ static int __maybe_unused silead_ts_suspend(struct device *dev) static int __maybe_unused silead_ts_resume(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); + bool second_try = false; int error, status; silead_ts_set_power(client, SILEAD_POWER_ON); + retry: error = silead_ts_reset(client); if (error) return error; + if (second_try) { + error = silead_ts_load_fw(client); + if (error) + return error; + } + error = silead_ts_startup(client); if (error) return error; status = silead_ts_get_status(client); if (status != SILEAD_STATUS_OK) { + if (!second_try) { + second_try = true; + dev_dbg(dev, "Reloading firmware after unsuccessful resume\n"); + goto retry; + } dev_err(dev, "Resume error, status: 0x%02x\n", status); return -ENODEV; } |